Focal Length: 50mm Aperture Range: f/1.8 EF Mount Lens Full-Frame Format Gear-Type STM Stepping Motor Optimized Lens Coating Minimum focusing distance of 1.15 ft. 49mm filter size 6 elements in 5 groups 7-Blade Circular Aperture

• 50mm focal length and maximum aperture of f/1.8
• Great for portraits, action, and nighttime photography
• Minimum focusing distance of 1.15 ft. (0.35m) and a maximum magnification of 0.21x
• Stepping motor (STM) delivers near silent, continous Move Servo AF for movies and smooth AF for stills
• 80mm effective focal-length on APS-C cameras, 50mm on full-frame cameras